<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true"
            >添加角色</el-button
          >
        </el-col>
      </el-row>

      <!-- 添加用户的对话框 -->
      <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed"
      >
        <!-- 内容主题 -->
        <el-form
          :model="addForm"
          :rules="addFormRules"
          ref="addFormRef"
          label-width="70px"
        >
          <el-form-item label="用户名" prop="roleName">
            <el-input v-model="addForm.roleName"></el-input>
          </el-form-item>
          <el-form-item label="角色描述" prop="roleDesc">
            <el-input v-model="addForm.roleDesc"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部区 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 修改用户的对话框 -->
      <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
      >
        <el-form :model="editForm" ref="editFormRef" label-width="70px">
          <el-form-item label="角色名称">
            <el-input v-model="editForm.roleName" ></el-input>
          </el-form-item>
          <el-form-item label="角色描述" prop="roleDesc">
            <el-input v-model="editForm.roleDesc"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 一级权限 -->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 二级和三级权限 -->
              <el-col :span="19">
                <!-- 通过for循环 嵌套渲染二级权限 -->
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                    >
                      {{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <!-- 渲染三级权限 -->
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="(item3, i3) in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                    >
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>
                    {{scope.row}}
                </pre> -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="showEditDialog(scope.row.id)"
              >编辑</el-button
            >
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeUserById(scope.row.id)"
              >删除</el-button
            >
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

     <!-- 分配权限的对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%" @close="setRightDialogClosed">
      <!-- 树形控件 -->
      <el-tree :data="rightslist" :props="treeProps" show-checkbox
      node-key='id' default-expand-all :default-checked-keys='defKeys'
      ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRighta"
          >确 定</el-button
        >
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  props: {},
  data() {
    return {
      // 所有角色列表数据
      rolelist: [],

      //   控制用户对话框的显示和隐藏
      addDialogVisible: false,
      //   添加用户的表单数据
      addForm: {
        roleName: "",
        roleDesc: "",
      },
      //   添加表单验证规则对象
      addFormRules: {
        roleName: [
          { required: true, message: "请输入角色名称", trigger: "blur" },
          {
            min: 2,
            max: 10,
            message: "用户名长度在2~10个字符之间",
            trigger: "blur",
          },
        ],
        roleDesc: [
          { required: true, message: "请对角色进行描述", trigger: "blur" },
          {
            min: 6,
            max: 20,
            message: "请把长度控制在6~20个字符之间",
            trigger: "blur",
          },
        ],
      },
      //   控制修改用户对话框的显示和隐藏
      editDialogVisible: false,
      //   查询到的用户信息对象
      editForm: {},
    //   控制分配权限对话框的显示和隐藏
       setRightDialogVisible:false,
    // 所有权限的数据   
        rightslist:[],
        // 树形控件的属性绑定对象
        treeProps:{
            label:'authName',
            children:'children',
        }, 
        // 默认选中的节点id值数组
        defKeys:[],
        // 当前即将分配权限的角色id
        roleId:'',
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    //   获取所有角色的列表
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败");
      }
      this.rolelist = res.data;
      console.log(this.rolelist);
    },
    // 监听Switch 开关状态的改变
    async userStateChanged(userinfo) {
      // console.log(userinfo);
      const { data: res } = await this.$http.put(
        `roles/${userinfo.id}/state/${userinfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state;
        return this.$message.error("更新用户状态失败！");
      }
      this.$message.success("更新用户状态成功！");
    },
    // 监听添加用户对话框关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    // 点击确定按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return;
        // 添加用户网络请求
        const { data: res } = await this.$http.post("roles", this.addForm);
        if (res.meta.status !== 201) {
          this.$message.error("添加用户失败");
        }

        this.$message.success("添加用户成功");
        // 隐藏添加用户对话框
        this.addDialogVisible = false;
        // 重新获取用户列表
        this.getRolesList();
      });
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id);
      const { data: res } = await this.$http.get("roles/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("查询用户信息失败");
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return;
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put(
          "roles/" + this.editForm.roleId,
          {
            roleName: this.editForm.roleName,
            roleDesc: this.editForm.roleDesc,
          }
        );
        console.log(this.editForm);
        console.log(res);
        if (res.meta.status !== 200) {
          return this.$message.error("用户信息更新失败");
        }
        // 关闭对话框
        this.editDialogVisible = false;
        // 刷新数据列表
        this.getRolesList();
        // 提示修改成功
        this.$message.success("用户信息更新成功");
      });
    },
    // 根据id删除对应信息
    async removeUserById(id) {
      // 弹框询问用户是否永久删除数据
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      // 如果用户确认删除，则返回值为字符串 comfirm
      // 如果用户取消删除，则返回值为字符串 cancel
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除");
      }
      const { data: res } = await this.$http.delete("roles/" + id);

      if (res.meta.status !== 200) {
        return this.$message.error("删除失败");
      }

      this.$message.success("删除成功");
      this.getRolesList();
    },
    // 根据id删除对应权限
    async removeRightById(role, rightId) {
      // 弹窗提示用户是否删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该文件, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (confirmResult !== "confirm") {
        return this.$message.info("取消删除");
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      );
      if (res.meta.status !== 200) {
        return this.$message.error("删除权限失败");
      }
      // this.getRolesList()
      role.children = res.data;
    },
    // 展示分配权限的对话框
    async showSetRightDialog(role) {
        this.roleId=role.id
        // 获取所有权限的数据
        const {data:res}=await this.$http.get('rights/tree')
        if(res.meta.status !==200){
            return this.$message.error('获取权限数据失败')
        }
        // 获取到的权限数据保存到data中
        this.rightslist = res.data
        // console.log(this.rightslist);

        // 递归获取的三级节点的id
        this.getLeafKeys(role,this.defKeys)

        this.setRightDialogVisible=true
    },
    // 通过递归的形式，获取角色下所有三级权限的id，保存到defKeys数组中
       getLeafKeys(node,arr){
        //    如果当前node节点不包含children属性，则是三级节点
        if(!node.children){
            return arr.push(node.id)
        }
        node.children.forEach(item=>this.getLeafKeys(item,arr))
       },
    //    监听分配权限对话框的关闭事件
    setRightDialogClosed(){
        this.defKeys=[]
    },
    // 点击确定为角色分配权限
    async allotRighta(){
        const keys=[
            ...this.$refs.treeRef.getCheckedKeys(),
            ...this.$refs.treeRef.getHalfCheckedKeys(),
            ]
            const idStr=keys.join(',')
            const{data:res}= await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
            if(res.meta.status !==200){
                return this.$message.error('分配权限失败')
            }
            this.$message.success('分配权限成功')
            this.getRolesList()
            this.setRightDialogVisible=false
    },
  },
  components: {},
};
</script>

<style scoped lang="less">
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
